Three-Season Room Addition in Knoxville, TN — Costs $7,807 to $63,434
What does three-season room addition cost in Knoxville? Average $24,398, ranging $7,807–$63,434. Labor runs $29.86/hr locally — 2% below the national average. Free breakdown with material + labor split.
Knoxville, TN Market
-2% vs nationalLabor Rate
$29.86/hr
Material Index
96
Avg Permit Cost
$982
Median Home Price
$247,979
Knoxville is a mid-sized city in Tennessee with a healthy pool of local contractors. Homeowners generally have several options to compare for a three-season room addition, which helps keep pricing competitive. Knoxville offers slightly below-average renovation costs, giving homeowners a small cost advantage compared to most US markets. At a median home price of $247,979, homeowners in Knoxville should weigh the project cost (9.8% of home value) carefully against expected returns to avoid over-improving for the local market.
Low Estimate
$7,807
National: $8,000
Mid-Range
$24,398
National: $25,000
High End
$63,434
National: $65,000
Per Sq Ft
$93
National: $95
Three-Season Room Addition Cost Calculator for Knoxville
Adjusted for Knoxville's labor rate ($29.86/hr) and material costs (index 96).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Knoxville
$24,398
Based on 200 sq ft at mid quality, adjusted for Knoxville market rates.
Local Cost Breakdown
At Knoxville's average rate of $29.86/hr (0% below national avg)
Material cost index 96 (4% below national baseline of 100)
Three-Season Room Addition vs. Home Value in Knoxville
| Metric | Knoxville | National Avg |
|---|---|---|
| Three-Season Room Addition (Mid-Range) | $24,398 | $25,000 |
| Median Home Price | $247,979 | $350,000 |
| Project as % of Home Value | 9.8% | 7.1% |
| Estimated ROI | 50% | 50% |
| Median Household Income | $58,880 | $75,000 |
What Affects the Price in Knoxville
- 1Local labor rates ($29.86/hr in Knoxville)
- 2Material cost index (96 vs national 100)
- 3Size
- 4Foundation type
- 5Screen vs window panels
- 6Roof style
Popular Upgrades
- Interchangeable screen and window panels
- Ceiling fans
- Outdoor-rated furniture
Other Projects in Knoxville, TN
Second Story Addition
$195,533
Accessory Dwelling Unit (ADU) Construction
$146,650
Room Addition
$87,990
Swimming Pool Installation
$63,319
Home Addition
$78,072
Inground Swimming Pool
$63,204
Attic Conversion
$53,869
Swimming Pool Construction
$48,972
Three-Season Room Addition in Other Tennessee Cities
Planning a Three-Season Room Addition in Knoxville
Building permits are typically required for a three-season room addition in Knoxville. The average permit fee in this area is $982, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 2-4 weeks from start to finish.
A three-season room addition is a complex project best left to licensed professionals. In Knoxville, skilled contractors charge an average of $29.86/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median Knoxville household earning $58,880/year, this project at $24,398 represents a significant investment. Consider financing options or phasing the work to spread costs over time.
Three-Season Room Addition — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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